JPH0467492A - Information reproducing device - Google Patents

Abstract

PURPOSE:To output the information of the words of a song and so on the contents of a recorded song and so on by character-display-outputting a song word information signal that song word information among the read information of an information reading means is reproduced to an external part. CONSTITUTION:When an information storing device 101 is played by an information reproducing device 501 and information in a storing area 201 is reproduced, song word information PH1 to PHn that the words of the song of digital audio information 301 are represented with character code information can be reproduced when a digital content information table 401 is reproduced. The digital audio information 301 includes plural pieces of music information TU1 to TUn, the song word information PH1 to PHn is the information to represent the words of the song of the music information TU1 to TUn by a character code information, a song word information signal Op to correspond to the song word information among the information read by an information reading means 601 can be character-display-outputted by a song word information output means 901. Thus, the words of the song can be outputted/displayed as characters from information storing device itself.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an information reproducing device, and particularly to a digital audio information reproducing device suitable for so-called karaoke performances.

[Conventional technology]

Conventionally, so-called karaoke performance devices are known that reproduce accompaniment music by playing an information recording medium such as a magnetic tape or a video disc on which only accompaniment music is recorded. These karaoke apparatuses mix, amplify, and output a vocal audio signal input from the microphone and an accompaniment music signal by externally connecting an amplifier, a microphone, a speaker, and the like.

[Problem to be solved by the invention]

In these karaoke performance devices, when a user wants to sing a desired song, the user checks the lyrics using a lyrics card or the like on which the lyrics of the desired song are printed, and performs the singing in accordance with accompaniment music.

However, depending on the situation, there may be cases where a lyric card or the like is not at hand, or where a large number of people want to sing together. In such a case,
It would be convenient if the lyrics of a desired song could be displayed to the user even without a printed lyrics card or the like.

Recently, compact discs (hereinafter referred to as CDs), which are one type of digital audio discs, are sometimes used as recording media for karaoke.

In a CD, music information is pulse code modulated and recorded in temporally divided storage areas. For CDs, TOC
(Table of Contents)
A subcode equivalent to a "table of contents" for searching recorded songs is recorded in a part called the lead-in (the part that is read first) on the innermost circumference of the CD disc. However, the storage capacity of this TOC is 9 bytes, and the data that can be stored include code information obtained by converting song titles into codes, address positions of songs, etc. Therefore, even the lyrics information of a desired song cannot be stored.

SUMMARY OF THE INVENTION An object of the present invention is to provide an information reproducing device that can output information such as lyrics regarding the contents of recorded songs to a user.

[Means to solve the problem]

In order to solve the above problems, the present invention is constructed as shown in FIG.

In FIG. 1, this information storage device 101 has a storage area 201. As shown in FIG. In the storage area 201, a digital content information table 401 and digital audio information 301 are stored.

Digital audio information 301 includes multiple song information TUs.
Contains l-TUn. The digital content information table 401 includes lyrics information PH, -PHn that expresses the lyrics of a plurality of pieces of music information TU1 to TU using character code information. An information reproducing device 501 that reproduces information from the information storage device 101 includes an information reading means 601 and a lyrics information outputting means 901.

[Effect]

According to the present invention having the above configuration, this information reproducing device 5
01, the information storage device 101 is played, and the storage area 20 is
When reproducing the information in 1, when reproducing the digital content information table 401, the digital audio information 30
Lyrics information PH1~ that expresses the lyrics of 1 using character code information
PHo can be played back. The digital audio information 301 includes a plurality of pieces of music information T U t to TUn, and the lyrics information PH, ~PHn are the pieces of music information TU1 to TUn.
This is information expressing the lyrics of TUn using character code information.

Therefore, the user can cause the lyrics information outputting means 901 to output the lyrics information signal O1 corresponding to the lyrics information PH-PH among the information read by the information reading means 601 in a character display. As a result, the user can, for example, output and display the lyrics as text from the information storage device itself, even if there is no lyrics card (printed material, etc.) for the song stored in this information storage device, and the list can be displayed. This allows you to sing the desired song.

〔Example〕

Example of an information storage device used in the present invention FIG. 2 shows an example of an information storage device used in the present invention. FIG. 2 shows the data structure of a CD-ROMXA disk, which is an information storage device.

A CD-ROM is a read-only memory (ROM) that stores digital information.
(abbreviation) is a medium used as an information storage device.

The standard was established in 1985, and its application to various fields is currently progressing. Characteristics of CD-ROMs include large recording capacity, optical fiber capability, high accessibility, possibility of mass copying, and low performance of playback systems.

One of the formats based on this CD-ROM is the CD-1 (CD-Interac).
CD-ROMXA) and CD-ROMXA. Both can record and reproduce audio/acoustic information and image information, and both use adaptive differential pulse code change R (hereinafter referred to as ADPCM) for audio/acoustic information.
Adpt! ve Dif'f'erentialPu
The common feature is that they use lseCode (abbreviation for Modula On). (Nikkei Electronics 1989
See May 15, 2015 issue (No. 473), pages 195-200. ) FIG. 2 shows the data sector structure which is the storage area of this CD-ROMXA disk.

In the case of the CD signal format, 98 subcode frames are handled as one block, and one block corresponds to 1/75 second. Therefore, 44, lX103x16x2
xl/75X1/8-2352, 2352 bytes of data can be recorded in one block of a CD.

Here, 44.1×103 is the sampling frequency, 16 is the quantization number, 2 is the stereo L and R, and 1/75 is the time (
seconds), and 1/8 represents the conversion rate between bits and bytes.

In CD-ROMXA, one block is treated as one sector, and user data is recorded in each sector. Depending on the size of the user data area, M o de 1 and M o
There is a standard for d e 2, and M o d e 2 has Fo
There are rml and Form2 standards.

In FIG. 2, this CD-ROF, IXA disc 11 has a lead-in section LIN, a storage area 21, and a lead-out section L. In the storage area 21, the track T has a volume disk drive T, sectors T1 to T, and a gear Tc. Volume Distributor TD is a CD
-Identification code and flag indicating that it is ROMXA;
This is the part that stores the startup directory, etc.
M o de 1 or M o de 2 F o
r m 1 is stored. Sector T-T (for example, Tk) that stores image/audio signals is MODE 2 F
o r m 2, sink S and header S
1, subheader 5s11, knee 5YNCH the data S, and error detection code section S UD
EDC is working. The sync S is a 12-byte portion that stores a signal for separating the sync lid. Header SH
is 4 bytes, of which 3 bytes store address information similar to a CD subcode, and the remaining 1 byte stores mode information.

The subheader SsH is 8 bytes and includes a final number H, a channel number H2, a sub-mode H3, and a coding formation H. Each item H-H4 is 1 byte each, and 2
It is overwritten (repeated twice).

The user data SUD is 2324 bytes and consists of a data unit U-U and a spare unit UsPi.
It has n. Figure 2 shows data units U1 to U.
is 128 bytes each, and the spare unit UsP is 20 bytes. Therefore, in this case, n-
It is 18. The error detection code section S consists of 4 bytes. The data DC unit U-H18 has a total of 2304 bytes, and (1) audio/acoustic signals are encoded and stored using the ADPCM method.

The principle of ADPCM is shown in FIG. First, the current input signal is predicted from the past input signal using an adaptive predictor, and the difference e(-x-y
) is calculated by the subtractor S1.

Next, the difference e is quantized using a plurality of bit numbers by an adaptive quantizer Q and encoded into Ce. Regeneration is the reverse of the above. That is, the encoded signal Ce is processed by the adaptive inverse quantizer Q-1
Returns to the difference e. Next, an adder A adds the signal y predicted by the adaptive predictor and the difference e to obtain an output signal X.

This ADPCM method allows efficient storage of audio data using fewer bits. Audio characteristics also differ depending on the bit saving rate (data compression rate). FIG. 4 shows the relationship between ADPCM and audio characteristics. Fourth
As can be seen from the figure, the bit saving rate for A level is 1/2 for stereo storage and 174 for monaural storage. The B level bit saving rate is 174 for stereo storage and 1/8 for monaural storage. Furthermore, at the C level, it is 1/8 for stereo storage and 1/16 for monaural storage. For example, a bit saving rate of 1/4 means that 1/4 of the conventional recording capacity is used, and the remaining 3/4 can be used for storing other data.

In FIG. 2, each data unit U is 128 bytes long and includes a land parameter section P and an ADPCM sample data section. The sound parameter part P, has 16 bytes, and the third
It stores the coefficients of the prediction filter of the ADPCM adaptive prediction device shown in the figure. The capacity of the ADPCM sample data section is 112 bytes, and data sampled by ADPCM is stored. Therefore, one sector as a whole has a data capacity of 2016 bytes (-112×18). If B-level stereo storage is performed as an ADPCM method, the number of bytes required for storage will be 504 bytes, based on 37.8 o3X4X2X1/75X1/8-504.

Therefore, from 2016÷504-4, four times as much data can be stored as compared to the normal storage method. That is,
A total of 4 channels worth of audio/acoustic signals can be stored. In this case, the first channel is sector T,
T 5, T...T to 1 9
4h+1 memorized. Here, h is an integer greater than or equal to 0.

Also, the second channel has sectors T, T,
Tto.

...T, the third channel is sector T, T
.

4h+2 3 7T,
...T, and the 4th channel is Seph It
4h+3 4...T are each stored in T
゛ T8° T12' 4h+4.

In this way, karaoke accompaniment music, which is movement information or music information, is pulse code modulated and stored in the ADPCM sample data section.

The file information table (hereinafter referred to as F
It is called ILE-TOC. ) can be memorized.

In this case, the sector “F” that stores the FILE-TOC
As T, one sector following the volume discriminator TD, as shown in FIG. 2, or two or more sectors can be used.

When used as FILE-TOC, MODE
1 or MODE 2 FORM 1, but MODE 1 is adopted in this embodiment. In other words, if one sector is used, F I
The capacity that can be stored as an LE-TOC is 2048 bytes as shown in FIG. 2, and if N sectors are used, the capacity is 2048xN bytes. In the case of MODE 1, as shown in FIG. 5, there is no subheader, and instead it has a ZERO section S and an error correction code section ERO8. ZERO part S is 8 by ECCZE
RO is RESERVED. In addition, the error correction code section S
is 276 bytes, parity PCC part S (172 bytes) and parity 9 part SQ (10
4 bytes).

FIG. 5 shows an example of FILE-TOC settings.

In FIG. 5, this FILE-TOC 402 uses one sector and includes an XA application information section
It has an XA data information section X. XA Application information section XA is 84 bytes, is a section for storing information regarding the contents of the disc, and includes part X, part xA2, tpartX, and part XA4. Part XA1 is 4 bytes long and is a part for storing the type of this CD-ROMXA disc. The types of CD-ROMXA discs include ``types that only include karaoke accompaniment music'' and ``types that include karaoke and video.Part XA2 is 16 bytes, and C
I) - This is the part that records the production date of the ROMXA disc. Part XA3 is 32 bytes and is a part that stores information regarding copyright. Part XA4 has 32 bytes and is a part that stores information regarding the corresponding system. XA data information department X, is XA hehen department X
and an XA data section XDD.

DI+
Stores layer size D Hto, etc.

The XA data section XDo is a section that stores various information data that is digital content information. The XA data section xDD includes an audio data section DA and a graphic data section D.
G, a telop data section DT, and a lyrics data section DS. When karaoke accompaniment music is stored as movement information or song information, digital content information is mainly stored in the audio data section DA. Lyric phrases, which are lyric information, are stored in the lyric data section DS.

If the song title information is character code information such as JIS code, it is usually stored in units of 8 bits (1 byte). In the case of audio information in which a song title is generated vocally, the data is compressed and stored using the ADPCM method (for example, C-level monaural recording).

Embodiment of the present invention Next, FIG. 6 shows an embodiment of the information reproducing apparatus according to the present invention. FIG. 6 shows the configuration of a karaoke performance bag W502 which is an information reproducing device.

In FIG. 6, this karaoke performance device 502 includes an optical pickup 61 as an information reading means, a control block 7 as a control means, a spindle motor 51, a demodulation block 8, a content information output block 9, and an external terminal 5
2.53.54.

The control block 7 is a system control microcomputer 71
, RAM71 R, and servo control microcomputer 7
2, a servo circuit 73, and an external human power section 74.

Further, the demodulation block 8 includes a waveform shaping circuit 81, a digital signal processing section 82, a RAM 82R, and a CD-ROM.
Decoder 83, RAM 83R, ADPCM decoder 84, RAM84R, and D/A converter 85
, a low-pass filter 86, a graphic controller 87, a RAM 87R, and a color palette 88.

The content information output block 9 includes a printer 91 and a liquid crystal display device 92.

An external amplifier AMP can be connected to the external terminal 52. The external amplifier AMP has an external microphone MC.
and an external speaker SP can be connected.

An image display device GD can be connected to the external terminal 53. The external terminal 54 can be connected to an external control device such as a microcomputer.

Next, the operation of this karaoke performance device will be explained.

First, the CD-ROM disk 11 is moved to the spindle motor 5.
Rotate by 1. The optical pickup 61 is a CD
- Read a digital signal expressed as a bit string from the recording surface of the ROM disk 11. optical pickup 61
The digital signal D S + read by is waveform-shaped by the waveform shaping circuit 81 and then inputted to the digital signal processing section 82 as the signal DS2. The digital signal processing section 82 first detects edges of the EFM signal using a reference clock generated by a crystal, and reproduces a data string. Then, a frame synchronization signal is detected from this data string, and the configuration of the frame data is accurately reproduced based on this synchronization signal. The frame data undergoes EFM demodulation to become symbol data in 8-bit units, and is written into the RAM 82H. Then RAM
The data stored in 82H is deinterleaved.

Then, error correction processing is performed, and the CD is output as signal DS3.
- sent to ROM decoder 83; The CD-ROM decoder 83 first searches for an address using the absolute time of the subcode, detects a sync in the data, and descrambles the data. Then, the header address is checked and the target sector is accessed. The obtained user data is subjected to error detection and correction, and then outputted as a signal D S
i, and is output to the ADPCM decoder 84.

ADPCM decoder 84 includes an adaptive inverse quantizer and an adaptive predictor (not shown), decodes signal D S 4 into a digital signal, and transmits it to D/A converter 85 as decoded signal D S s.

The D/A converter 85 converts the decoded signal Ds5 into an analog quantity and sends it to the low-pass filter 86 as a signal AS1.

The low-pass filter 86 outputs the signal AS1 to the external terminal 52 as an accurate analog signal As2.

The analog signal As2, which is the audio output signal of this karaoke performance device 502, is input manually to an external amplifier AMP. On the other hand, the voice input to the external microphone MC is input to the external microphone MC as a microphone voice signal vS. The external amplifier AMP adjusts the frequency characteristics of the analog signal AS2, mixes it with the microphone audio signal vS, amplifies it to an appropriate level, and outputs the signal AS8 to the external speaker SP. The external speaker SP outputs the input signal AS3 as sound.

The signal DS4 output from the CD-ROM decoder 83 is also sent to the graphic controller 87. When image information is stored in the user data "UD" of the CD-ROM disk 11, the graphic controller 87 extracts an image signal regarding the image information contained in the signal DS4 and outputs it as a graphic signal GS1. do.

For example, the FILE-T of the CD-ROM disc 11
This is the case of lyrics information PH1 to PHn stored in the OC 402 as character code information. Graphic signal G
S, is output to the color palette 88. The color palette 88 adjusts or adds colors to the graphic signal GS, and outputs it to the external terminal 5 as a graphic signal GS2.
Output to 3.

A graphic signal GS2, which is an image output signal of this karaoke performance device 502, is input to an image display device GD. The image display device GD outputs the graphic signal GS2 as an image.

On the other hand, the system control microcomputer 7] receives a control signal C81□ input from the external human power section 74, and receives the control signal C81□ from the external terminal 54.
Control is performed by outputting a control signal CS13 to the servo control microcomputer 72 using a control signal C5 manually input from the servo control microcomputer 72 or a built-in program. The system control microcomputer 71 also includes a CD-ROM decoder 83.
, ADPCM decoder 84, graphic controller 87, etc., control signals cs cs
, 23ゝ 24 CS 25, etc. In addition, the system control microcomputer 71 manually receives FILE-TOC data from the CD-ROM decoder 83 and stores it in the RAM 7.
Store in 1R. The servo control microcomputer 72 is
Control signal C8 from system control microcomputer 71
13, the subcode signal C828 is received from the digital signal processing section 82, and the digital signal processing section 82 and the servo circuit 73 receive the control signals C82□ and cs2.
．． Controlled by The servo circuit 73 receives a control signal cs21 from the system control microcomputer 71, and controls the optical pickup 61 and spindle motor 51 using control signals CS26 and cs27.

Next, the operation when the CD-ROM disk 11 is loaded into the karaoke performance apparatus 502 as described above will be explained using FIGS. 5 to 7.

In FIG. 7, karaoke performance device 502 starts at step 1000 and determines whether a disc is loaded. Next, the process advances to step 1002. Step 10o2 is the TO stored in the disk glue-doif.
This is a TOC reading subroutine for reading C. Then,
In step 1003, it is determined whether the disc is a normal CD disc or a CD-ROM disc.

If it is a normal CD, the process moves to step 1004 and the CD-
If it is a ROM disk, the process advances to step 1005. Step 10051: FILE-TOC reading subroutine for reading iF ILE-TOC data. Next, the process moves to step 1006.

Step 1006 is a lyrics printing/displaying routine that prints or displays the lyrics of the desired karaoke song.

The contents of the TOC reading subroutine 1002 are shown in step 10.
20 to 1025. Also, the contents of the FILETOC reading subroutine 1005 are changed to steps 1050 to 1056.
Shown below.

Here, the contents of the lyrics printing/displaying routine 1006 will be explained. In step 1o61, RAM7
The FILE-TOC data stored in 1R is read out and sent to the printer 9 by the system control microcomputer 71.
1 or transferred to the liquid crystal display device 92. Next, in step 1062, it is determined whether a key operation for printing or displaying is being performed. If a print or display key operation has been performed, in step 1063, the printer 91 prints out or the liquid crystal display device 9
2, character images are displayed.

In this case, in the case of printout from the printer 91, the lyrics of the desired song may be output all at once.

In the case of character image display using the liquid crystal display device 92, the reading operation from the system microcomputer 71 or RAM 71R is controlled so that the lyrics phrase is displayed immediately before the time when the lyrics phrase should be sung in synchronization with the progress of the karaoke song. do.

Next, FIG. 8 shows an example in which the karaoke performance apparatus according to the present invention is mounted on a passenger car. This karaoke performance device 50
3 is equipped with a content information output device 9A as content information output means or lyrics information output means, as shown in FIGS. 8(A) and 8(B).

The content information output device 9A includes a printer 91A and a liquid crystal display panel 92A. The liquid crystal display panel 92A is
Approximately 1 to 2 lines of lyric phrases can be displayed. In addition to the lyrics, the liquid crystal display panel 92A may display related information such as the song title and notes on the lyrics.

Furthermore, the karaoke performance device 503 may be equipped with a lyrics display type karaoke microphone 9B as shown in FIG. 8(C). In FIG. 8(C), this lyric display type karaoke microphone 9B has a built-in microphone M.
This is a wireless microphone equipped with a CB and a liquid crystal display panel 92B. On the liquid crystal display panel 92B, about one or two lines of lyrics phrases to be sung are displayed. In addition to the lyric phrase, the liquid crystal display panel 92B can also display related information such as the song title and notes on the lyrics.

In this way, the singer who is the user of the karaoke performance device 503 can sing the desired song using the printed lyrics or the lyrics displayed on the liquid crystal display panel, even if there is no printed lyrics card. I can sing the lyrics accurately.

In the above embodiments, movement information or song information or karaoke accompaniment music has been described, but this may be a normal song or a set of other digital audio information. By doing this, it is also possible to enjoy the song while looking at the lyrics of the song that includes normal vocal sounds.

In the embodiments described above, the digital content information mainly refers to the lyrics of the karaoke song, but it may also include the title of the song, notes on the lyrics, and the like.

In the above embodiment, an example of a CD-ROMXA disk was explained as an information storage device, but this is a CD-ROM of another type.

CD-1, regular compact disc, or DAT
It may also be a SIC card or other format of read-only memory.

〔Effect of the invention〕

As explained above, according to the present invention, in a karaoke performance device, etc., a user can display the lyrics of a desired song on the screen of an image display device provided with the karaoke performance device, etc., even without printed lyrics cards or the like. It is particularly suitable for use in passenger cars.

Furthermore, since a digital storage device such as a CD-ROMXA disk or a compact disk is used as the information storage device, there is an advantage that data access time is fast.

[Brief explanation of the drawing]

FIG. 1 is a diagram explaining the principle of the present invention, and FIG. 2 is a CD-ROM which is an example of an information storage device used in the present invention.
A diagram showing the data structure of a ROMXA disk, Figure 3 is a diagram explaining the principle of the ADPCM method, Figure 4 is a diagram showing the relationship between ADPCM and audio characteristics, etc., and Figure 5 is a diagram showing the data structure of FILE-TOC. , FIG. 6 is a diagram showing the configuration of a karaoke performance device according to an embodiment of the present invention, FIG. 7 is a diagram showing the contents of a control program in the karaoke performance device of FIG. 7, and FIG. 8 is a diagram showing a passenger car. FIG. 2 is a diagram showing an example of a karaoke performance device installed in the karaoke performance device. 6... Reading block, 7... Control block, 8... Demodulation block, 9... Content information output block, 9A... Content information output device, 9B. Lyrics display type karaoke microphone, 11.・
・CD-ROM disk, 21...Storage area, 51...Spindle motor, 52-54...External terminal, 71...System control microcomputer, 71R...
・RAM. 72... Servo control microcomputer, 73... Servo circuit, 74... External input section, 81... Waveform shaping circuit, 82... Digital signal processing section, 83... CD-ROM decoder, 84. ...ADPCM decoder, 85...Graphic controller, 86...Low pass filter, 87...Graphic controller, 88...Color palette, 91.91A...Printer, 92...Liquid crystal display device, 92A, 92B...Liquid crystal display panel, 101...Information storage device, 201...Storage area, 301...Digital audio information, 401...
Digital content information table, 402...F I L
E-TOC. 501...Information reproducing device, 502.503...Karaoke performance device, 601...Information reading means, 901...Lyrics information outputting means, 1000-1064...Program step, AMP
...External amplifier, C, CS...Control signal, GD...Image display device, MC...External microphone, MCB...Built-in microphone, PH1~PH,...Lyrics information, 5l-8x... Section, SP...external speaker, Tut, ~TUn...music information.

Claims (1)

[Claims] An information storage device that stores digital audio information including a plurality of pieces of music information, and a digital content information table containing lyrics information that expresses the lyrics of the pieces of music information using character code information. An information reproducing device that reproduces information, comprising: an information reading device that reads information from the information storage device; and a lyric information signal that reproduces the lyric information among the information read by the information reading device and outputs it in a character display to the outside. An information reproducing device comprising: lyric information output means.